AArch32: Add ARM platform changes in BL2
This patch adds ARM platform changes in BL2 for AArch32 state.
It instantiates a descriptor array for ARM platforms describing
image and entrypoint information for `SCP_BL2`, `BL32` and `BL33`.
It also enables building of BL2 for ARCH=aarch32.
Change-Id: I60dc7a284311eceba401fc789311c50ac746c51e
diff --git a/Makefile b/Makefile
index aaf84db..2b630b3 100644
--- a/Makefile
+++ b/Makefile
@@ -522,13 +522,13 @@
include bl1/bl1.mk
endif
-# For AArch32, BL31 is not applicable, and BL2 & BL2U are not supported at present.
-ifneq (${ARCH},aarch32)
ifdef BL2_SOURCES
NEED_BL2 := yes
include bl2/bl2.mk
endif
+# For AArch32, BL31 is not applicable, and BL2U is not supported at present.
+ifneq (${ARCH},aarch32)
ifdef BL2U_SOURCES
NEED_BL2U := yes
include bl2u/bl2u.mk
diff --git a/plat/arm/board/fvp/platform.mk b/plat/arm/board/fvp/platform.mk
index 1dad989..ca348d1 100644
--- a/plat/arm/board/fvp/platform.mk
+++ b/plat/arm/board/fvp/platform.mk
@@ -126,7 +126,7 @@
BL2_SOURCES += drivers/io/io_semihosting.c \
drivers/delay_timer/delay_timer.c \
lib/semihosting/semihosting.c \
- lib/semihosting/aarch64/semihosting_call.S \
+ lib/semihosting/${ARCH}/semihosting_call.S \
plat/arm/board/fvp/fvp_bl2_setup.c \
plat/arm/board/fvp/fvp_err.c \
plat/arm/board/fvp/fvp_io_storage.c \
diff --git a/plat/arm/common/aarch32/arm_bl2_mem_params_desc.c b/plat/arm/common/aarch32/arm_bl2_mem_params_desc.c
new file mode 100644
index 0000000..9c92e5e
--- /dev/null
+++ b/plat/arm/common/aarch32/arm_bl2_mem_params_desc.c
@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * Redistributions of source code must retain the above copyright notice, this
+ * list of conditions and the following disclaimer.
+ *
+ * Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ *
+ * Neither the name of ARM nor the names of its contributors may be used
+ * to endorse or promote products derived from this software without specific
+ * prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <bl_common.h>
+#include <desc_image_load.h>
+#include <platform.h>
+#include <platform_def.h>
+
+
+/*******************************************************************************
+ * Following descriptor provides BL image/ep information that gets used
+ * by BL2 to load the images and also subset of this information is
+ * passed to next BL image. The image loading sequence is managed by
+ * populating the images in required loading order. The image execution
+ * sequence is managed by populating the `next_handoff_image_id` with
+ * the next executable image id.
+ ******************************************************************************/
+static bl_mem_params_node_t bl2_mem_params_descs[] = {
+#ifdef SCP_BL2_BASE
+ /* Fill SCP_BL2 related information if it exists */
+ {
+ .image_id = SCP_BL2_IMAGE_ID,
+
+ SET_STATIC_PARAM_HEAD(ep_info, PARAM_IMAGE_BINARY,
+ VERSION_2, entry_point_info_t, SECURE | NON_EXECUTABLE),
+
+ SET_STATIC_PARAM_HEAD(image_info, PARAM_IMAGE_BINARY,
+ VERSION_2, image_info_t, 0),
+ .image_info.image_base = SCP_BL2_BASE,
+ .image_info.image_max_size = PLAT_CSS_MAX_SCP_BL2_SIZE,
+
+ .next_handoff_image_id = INVALID_IMAGE_ID,
+ },
+#endif /* SCP_BL2_BASE */
+
+ /* Fill BL32 related information */
+ {
+ .image_id = BL32_IMAGE_ID,
+
+ SET_STATIC_PARAM_HEAD(ep_info, PARAM_EP,
+ VERSION_2, entry_point_info_t,
+ SECURE | EXECUTABLE | EP_FIRST_EXE),
+ .ep_info.pc = BL32_BASE,
+ .ep_info.spsr = SPSR_MODE32(MODE32_mon, SPSR_T_ARM,
+ SPSR_E_LITTLE, DISABLE_ALL_EXCEPTIONS),
+
+ SET_STATIC_PARAM_HEAD(image_info, PARAM_EP,
+ VERSION_2, image_info_t, IMAGE_ATTRIB_PLAT_SETUP),
+ .image_info.image_base = BL32_BASE,
+ .image_info.image_max_size = BL32_LIMIT - BL32_BASE,
+
+ .next_handoff_image_id = BL33_IMAGE_ID,
+ },
+
+ /* Fill BL33 related information */
+ {
+ .image_id = BL33_IMAGE_ID,
+
+ SET_STATIC_PARAM_HEAD(ep_info, PARAM_EP,
+ VERSION_2, entry_point_info_t, NON_SECURE | EXECUTABLE),
+#ifdef PRELOADED_BL33_BASE
+ .ep_info.pc = PRELOADED_BL33_BASE,
+
+ SET_STATIC_PARAM_HEAD(image_info, PARAM_EP,
+ VERSION_2, image_info_t, IMAGE_ATTRIB_SKIP_LOADING),
+#else
+ .ep_info.pc = PLAT_ARM_NS_IMAGE_OFFSET,
+
+ SET_STATIC_PARAM_HEAD(image_info, PARAM_EP,
+ VERSION_2, image_info_t, 0),
+ .image_info.image_base = PLAT_ARM_NS_IMAGE_OFFSET,
+ .image_info.image_max_size = ARM_DRAM1_SIZE,
+#endif /* PRELOADED_BL33_BASE */
+
+ .next_handoff_image_id = INVALID_IMAGE_ID,
+ }
+};
+
+REGISTER_BL_IMAGE_DESCS(bl2_mem_params_descs)
diff --git a/plat/arm/common/arm_bl2_setup.c b/plat/arm/common/arm_bl2_setup.c
index a2ae11a..a4fac0d 100644
--- a/plat/arm/common/arm_bl2_setup.c
+++ b/plat/arm/common/arm_bl2_setup.c
@@ -246,7 +246,12 @@
BL2_COHERENT_RAM_LIMIT
#endif
);
+
+#ifdef AARCH32
+ enable_mmu_secure(0);
+#else
enable_mmu_el1(0);
+#endif
}
void bl2_plat_arch_setup(void)
@@ -266,9 +271,11 @@
assert(bl_mem_params);
switch (image_id) {
+#ifdef AARCH64
case BL32_IMAGE_ID:
bl_mem_params->ep_info.spsr = arm_get_spsr_for_bl32_entry();
break;
+#endif
case BL33_IMAGE_ID:
/* BL33 expects to receive the primary CPU MPID (through r0) */
diff --git a/plat/arm/common/arm_common.mk b/plat/arm/common/arm_common.mk
index 875e919..98d7219 100644
--- a/plat/arm/common/arm_common.mk
+++ b/plat/arm/common/arm_common.mk
@@ -128,7 +128,7 @@
drivers/io/io_storage.c \
plat/arm/common/arm_bl2_setup.c \
plat/arm/common/arm_io_storage.c \
- plat/common/aarch64/platform_up_stack.S
+ plat/common/${ARCH}/platform_up_stack.S
ifeq (${LOAD_IMAGE_V2},1)
BL2_SOURCES += plat/arm/common/${ARCH}/arm_bl2_mem_params_desc.c\
plat/arm/common/arm_image_load.c \
